/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_BASE_PARSEDOUBLE_H
#define ANDROID_BASE_PARSEDOUBLE_H

#include <errno.h>
#include <stdlib.h>

#include <limits>

namespace android {
    namespace base {

// Parse double value in the string 's' and sets 'out' to that value.
// Optionally allows the caller to define a 'min' and 'max' beyond which
// otherwise valid values will be rejected. Returns boolean success.
        static inline bool ParseDouble(const char *s, double *out,
                                       double min = std::numeric_limits<double>::lowest(),
                                       double max = std::numeric_limits<double>::max()) {
            errno = 0;
            char *end;
            double result = strtod(s, &end);
            if (errno != 0 || s == end || *end != '\0') {
                return false;
            }
            if (result < min || max < result) {
                return false;
            }
            *out = result;
            return true;
        }

    }  // namespace base
}  // namespace android

#endif  // ANDROID_BASE_PARSEDOUBLE_H
